docs: def migratable_vc_domains(self):
          """
          Gets the VC Migration Manager API client.
  
          Returns:
              MigratableVcDomains:
          """
          if not self.__migratable_vc_domains:
              self.__migratable_vc_domains = MigratableVcDomains(self.__connection)
          return self.__migratable_vc_domains